Search results
Results from the WOW.Com Content Network
The international definition of fog is a visibility of less than 1 km (3,300 ft); mist is a visibility of between 1 km (0.62 mi) and 2 km (1.2 mi) and haze from 2 km (1.2 mi) to 5 km (3.1 mi). Fog and mist are generally assumed to be composed principally of water droplets, haze and smoke can be of smaller particle size.
Arctic haze is the phenomenon of a visible reddish-brown springtime haze in the atmosphere at high latitudes in the Arctic due to anthropogenic [1] air pollution. A major distinguishing factor of Arctic haze is the ability of its chemical ingredients to persist in the atmosphere for significantly longer than other pollutants.
Stefansson, born William Stephenson, was born at Arnes, Manitoba, Canada, in 1879.His parents had emigrated from Iceland to Manitoba two years earlier. After losing two children during a period of devastating flooding, the family moved to Dakota Territory in 1880 and homesteaded a mile southwest of the village of Mountain in Thingvalla Township of Pembina County.
The word Arctic comes from the Greek word ἀρκτικός (arktikos), "near the Bear, northern" [4] and from the word ἄρκτος (arktos), meaning bear. [5] The name refers either to the constellation known as Ursa Major, the "Great Bear", which is prominent in the northern portion of the celestial sphere, or to the constellation Ursa Minor, the "Little Bear", which contains the celestial ...
However, his most important expedition was the British Arctic Air Route Expedition of 1930–31. Watkins led a team of fourteen men to survey the east coast of Greenland and monitor weather conditions there, the information being needed for a planned air route from England to Winnipeg . [ 1 ]
Relationship of Earth's axial tilt (ε) to the tropical and polar circles. The Arctic Circle is the southernmost latitude in the Northern Hemisphere at which the centre of the Sun can remain continuously above or below the horizon for twenty-four hours; as a result, at least once each year at any location within the Arctic Circle the centre of the Sun is visible at local midnight, and at least ...
In meteorology, visibility is a measure of the distance at which an object or light can be seen. The main article for this category is Visibility . Subcategories
Louise Arner Boyd (September 16, 1887 – September 14, 1972) was an American explorer of Greenland and the Arctic, who wrote extensively of her scientific expeditions.She became the first woman to fly over the North Pole in 1955, after privately chartering a DC-4 and crew that included aviation pioneers Thor Solberg and Paul Mlinar.